Recent questions tagged Pattern

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pattern matching - What does `:_*` (colon underscore star) do in Scala?

I have the following piece of code from this question: def addChild(n: Node, newChild: Node) = n match { case Elem( ... Node, and then? What does : _* do? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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615 views

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pattern matching - In regex, match either the end of the string or a specific character

I have a string. The end is different, such as index.php?test=1&list=UL or index.php?list=UL&more=1. ... pattern matches the second example but not the first. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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492 views

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pattern matching - Scala match recursive objects

I am a newbie in Scala and I want to build a small recursive pattern matching with objects. I keep ... :https://stackoverflow.com/questions/65924782/scala-match-recursive-objects...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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535 views

1 answer

pattern matching - Scala match recursive objects

I am a newbie in Scala and I want to build a small recursive pattern matching with objects. I keep ... :https://stackoverflow.com/questions/65924782/scala-match-recursive-objects...

asked Apr 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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777 views

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pattern matching - How to compare a character to a number in Haskell?

I'm trying to do it by pattern matching with the following [x| x <- "example string", x > 106] I know you can ... x > 106] And apparently doesn't recognise ord as a valid keyword....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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pattern match weird behavior with scala 2.13.4

I have the following code and my issue is with the DropWhile Function for which the compiler complain and i can't really ... it a bug or limitation or am I not seeing something ?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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